What plots do I point on the graph?

Problem 28.31 A coaxial cable consists of a solid inner conductor of radius R surrounded by a concentric cylindrical tube of inner radius R2 and outer radius R3 (the figure). The conductors carry equal and opposite currents Io distributed uniformly across their cross sections. (Figure 1) Figure 1 of 1 R R3 te Let Io to R 1.50 A, R = 1.00 cm, R = 2.00 cm, and R3 = 2.50 cm. Graph B from R=0 3.00 cm. + add graph B(10-5T) 3.0 2.5 2.0 1.5 1.0 0.5 Submit O add points X delete graph i graph info 0.5 1.0 My Answers Give Up 1.5 R (cm) 2.0 Incorrect; Try Again; 3 attempts remaining reset ? help 2.5 3.0